Wearing a life jacket while swimming in lakes, rivers or the ocean is something all experts recommend. In fact you don’t even have to be an expert to know that a life jacket can save your life. But what do you do if you somehow end up in the water by accident? Obviously, you wouldn’t have a life jacket on in that situation. So what can you do? The man in the video below demonstrates a quick way to make a flotation device using only your pants. The key to survival in an extreme situation is to be able to make use of the few things you have at your disposal.